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## org.bouncycastle.crypto.generators
Class RSAKeyPairGenerator

    java.lang.Object
      org.bouncycastle.crypto.generators.RSAKeyPairGenerator

All Implemented Interfaces:
  AsymmetricCipherKeyPairGenerator

public class RSAKeyPairGenerator
extends java.lang.Object
implements AsymmetricCipherKeyPairGenerator

an RSA key pair generator.

Constructor Summary
`RSAKeyPairGenerator()`

Method Summary
`protected java.math.BigInteger` | `chooseRandomPrime(int bitlength, java.math.BigInteger e, java.math.BigInteger sqrdBound)` Choose a random prime value for use with RSA
`AsymmetricCipherKeyPair` | `generateKeyPair()` return an AsymmetricCipherKeyPair containing the generated keys.
`void` | `init(KeyGenerationParameters param)` intialise the key pair generator.
`protected boolean` | `isProbablePrime(java.math.BigInteger x)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### RSAKeyPairGenerator

    public RSAKeyPairGenerator()

Method Detail

### init

    public void init(KeyGenerationParameters param)

  Description copied from interface: `AsymmetricCipherKeyPairGenerator`
  intialise the key pair generator.

  Specified by:
    `init` in interface `AsymmetricCipherKeyPairGenerator`
  Parameters:
    `param` - the parameters the key pair is to be initialised with.

### generateKeyPair

    public AsymmetricCipherKeyPair generateKeyPair()

  Description copied from interface: `AsymmetricCipherKeyPairGenerator`
  return an AsymmetricCipherKeyPair containing the generated keys.

  Specified by:
    `generateKeyPair` in interface `AsymmetricCipherKeyPairGenerator`
  Returns:
    an AsymmetricCipherKeyPair containing the generated keys.

### chooseRandomPrime

    protected java.math.BigInteger chooseRandomPrime(int bitlength,
                                                     java.math.BigInteger e,
                                                     java.math.BigInteger sqrdBound)

  Choose a random prime value for use with RSA

  Parameters:
    `bitlength` - the bit-length of the returned prime
    `e` - the RSA public exponent
  Returns:
    A prime p, with (p-1) relatively prime to e

### isProbablePrime

    protected boolean isProbablePrime(java.math.BigInteger x)

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